The present invention aims to provide a panel television device with built-in disc loader capable of constantly detecting a mounted state of a disc while alleviating the process of the television section. The panel television device with built-in disc loader has a disc loader section arranged with a disc sensor which state changes according to the detection of the presence of the disc inside, and a sub-microcomputer for performing a disc detecting process based on the state of the disc sensor; and has a television section arranged with a main microcomputer for performing the disc detecting process based on the state of the disc sensor; where drive power is constantly supplied to the disc sensor and the main microcomputer; and the disc detecting process is performed by the sub-microcomputer when the power of the disc loader section is turned ON, and the disc detecting process is performed by the main microcomputer when the power of the disc loader section is turned OFF.